#include "s3c2440_soc.h"
void sdram_init()
{
    BWSCON = 0x22000000;
    BANKCON6 = 0x18001;
    BANKCON7 = 0x18001;

    REFRESH = 0x8404f5;
    BANKSIZE = 0xb1;
    MRSRB6 = 0X20;
    MRSRB7 = 0X20;
}

int sdram_test(void)
{

    volatile unsigned int* p = (volatile unsigned int *) 0x30000000;
    int i;

    //write sdram
    for(i = 0; i<1000;i++)
	p[i] = 0x55;

    //read sdram
    for(i = 0;i<1000;i++)
	if(p[i] != 0x55)
	    return -1;

    return 0;
}
